Tool for watch makers and repairers.



. Witnesses E. N. MANN.

TOOL FOR WATCH MAKERS AND RBPAIRERS. APPLICATION FILED APR. 28, 1909.

Patented May 10, m0.

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@tbosmceg g EDWARD N. MANN, OF ALMA, KANSAS.

TOOL FOR WATCH MAKERS AND REPAIRERS.

Specification of Letters Patent.

Patented May 114), 191W.

Application filed April 28, 1909. Serial No. 492,666. I

To all whom it may concern:

Be it known that I, EDWARD N. MANN, a citizen of the United States ofAmerica, residing at Alma, in the county of Wabaunsee and btate ofKansas, have invented certain new and useful Improvements in Tools forWatch Makers and Repairers, of which the Further objects and advantagesof the in- I vention will be set forth in the detailed description whichnow follows.

In the accompanying drawing, Figure 1 is a side elevation of a tool ofthe character set forth, Fig. 2 is a front elevation thereof, 'Fig. 3 isa view partly in side elevation and partly in section, and Fig. 4 is adetail sectional view of a portion of the vertically movable presserbar.

Like numerals designate corresponding parts in all of the figures of thedrawing.

Referring to the drawing, the numeral 5 designates a base from. which astandard 6 rises. This standard is provided with a head 7 having a bore8 formed therein. The lower end of this bore is closed by a block 9which has an angular opening 10 formed therein. An angular presser bar11 moves vertically through this opening. At its upper end, this presserbar terminates in a collar 12 and a coiled spring 13 bears between thiscollar and the block 9. Above this collar is a round extension 14 of thepresser bar. A screw 15 which carries a knurled head 16 by which it maybe rotated is threaded into a block 17, both the blocks 17 and 9 beingrigidly secured by brazing or in any other desiredmanner to the head ofthe standard 6. The screw 15 is provided with a central bore 18 in whichthe extension 14 lies. The spring 13 normally tends to force the presserbar 11 u wardl It is a arent however, that by P y PP the spring 13. a

rotating the screw 15, this presser bar may be forced downwardly againstthe tension of The means for gripping the roller table and holding thesame while the staif is bebeneath the ing forced out of engagementtherewith, will now ,be described. These means comprlse a cone 20 inwhich a stem 21 is threaded. This stem carries a head 22 in, whichgripping levers 23 are pivoted at 24. A spring 25 normally tends toforce the upper ends of these levers apart and to force the tails 26'thereof into engagement with the wall of the cone 20. The levers 23 areprovided with inturned gripping ends 27 adapted to grip and hold thebalance Wheel of a watch, while the staff is ,being forced therefrom. Byholding the head 22 against rotation and by turning the cone upon thescrew 21, it is apparent that this screw may be caused to travel downinside of the cone to thereby spread the tails 26 apart and to force thegripping ends 27 together. After this is done, the watch wheel is firmlyheld and supported by these gripping ends, then the screw 15 is rotatedto force the presser bar 11 downwardly at which time the hear ing point28 of the staff 29 enters a recess 30- (see Fig. 4) of the presser bar11 and is protected thereby during the further downward movement of thepresser bar. This further downward movement of the presser bar forcesthe staff out of the roller table and forces the, wheel and the hairspring (not shown) from said staff. When the cone is screwed in theopposite direction, the spring- 25 acts to force the upper ends of thelevers 23 away from each other to thereby release the roller table.Since the gripping ends 27 approach the balance wheel from the sideopposite the presser bar, it follows that these ends can enter beneaththe hair spring to accomplish the objects sought. This is an importantfeature because the hair spring of a watch is ordinarily set down withinthe rim of-the balance wheel to such an extent that any grippin membersapproaching the spring upon t e same side of the wheel as the presserbar, would be unable to grasp the hair spring collet because the hairspring would be in the way. By locating the gripping ends 27 andtheparts carried thereby presser bar, this difliculty is obviated.

From the foregoing description, it will be seen that simple andefiicient means are herein provided for accomplishing the objects of.the invention, but while the elements herein shown and described arewell adapted to serve the, pnrposes for which they are intended, it isto-be understood that the invenan abearin tion is not limited to theprecise construction set forth, but includes within its purview suchchanges as may be made within the scope of the ap ended claims.

Havmg describe my invention, what I claim is:

1. In a device of the character described, the combination with ahorizontal supporting base, of a vertical standard rising therefrom anda head in which said standard terminates, a screw threaded into saidhead and aving an opening formed in the lower por tion thereof, apresser bar comprising an an ular body portion, a reduced upper endcollar between said body portion and sai reduced upper end, said reducedupper end entering the opening formed in the lower end of the screw andthe lower end of said screw bearing against said collar, and a springdisposed between the underside of said collar and a portion of the head,substantially as shown and described.

2. In a device of the character described, the combination with ahorizontal supporting base, of a vertical standardXriSing therefrom andterminating in a vert'cal head, a screw threaded into said head andhaving an opening formed in the lower portionthereof,

a presser bar comprising an angular body portion, a reduced upper endand a bearing collar between said bearing portion and sai reduced upperend, said reduced upper end entering an opening formed in the lower endof the screw and the lower end of said screw bearin against said collar,a spring disposed %etween the under side of said collar and a portion ofthe head, said spring normally tending to force the presser bar up,-wardly and the angular portion of said presser bar traveling in anangular opening formed in the lower portion of said head, a cone, thebase of which rests upon said horizontal base, a vertical stem havingthreaded engagement with said cone, a transverse head carried by saidthreaded stem, a pair of levers pivoted intermediate their ends to theextremities of said head, the upper ends of said levers being inturnedand the lower ends of said levers en aging the face of the cone, and asprin isposed between said levers and normal y tending to force theirends apart.

In testimony whereof I aflix my signature in presence of two witnesses.

. EDWARD N. MANN. Witnesses:

FRED. J. FREY, OsoAR SoHMrrz.

